What action is not considered a basis for system breach?

Alarm testing is not considered a basis for a system breach because it is a routine process that ensures the alarm system is functioning correctly. This practice is crucial for the overall safety and integrity of the medical gas system as it allows personnel to check whether alarms will activate in the event of an actual emergency.

In contrast, actions like the addition of components, physical pipeline separation, and component removal can significantly impact the integrity and safety of the medical gas system. These activities may introduce risks or disrupt the system’s functionality, potentially leading to breaches. Alarm testing is a preventative measure designed to maintain operational safety rather than a threat to the system's security.